A 100m long ramp is constructed perpendicular to a river’s edge with the
highest point 20 m directly above the edge of the bank
motorcycle stunt rider uses the ramp in an attempt to leap across a 30m wide
river. The motorcycle accelerates from rest at the bottom of the ramp and takes
off with a speed of 20 ms−1 moving parallel to the face of the ramp and
perpendicular to the river bank.
(a) What is the maximum height above the river banks reached by the
(b) How long after take-off does the motorcycle land on the opposite bank?
(c) Calculate how far from the river the motorcycle lands.
(d) Calculate the velocity of the motorcycle at the moment of landing. Give your
answer both as the magnitude and direction of the velocity vector and in
s= ut+1/2 at^2
v2= u2 + 2as
The Attempt at a Solution
arcsin0.2= 11.5369 degrees
u= 20 sin 11.5369....= 3.9458...
components in y diection-
o=15.569 + 2(-10) s
s= 0.77849 meteres.....which doesnt seem correct.....?
can anyone do this ??